you might have a problem making it brighter but there are two popular programs that will take your 2 AVIs and make it to one DVD:

ConvertXToDVD and NeroVision. Just add your AVIs and let the program do it's job! try out the free version of ConvertXToDVD and see if you like it....... the free version will leave a watermark logo in the movie but you will get the idea on how it works......

I wouldn't recommend telling he world you got a movie that isn't even on DVD yet? Moderators don't like that too much.

But in answer to your question, you can use ConvertXtoDVD like IHoe suggested. If you're going to do that, use VirtualDub first to join your two avi files. If you just put the two avi files in ConvertX, then you will get two separate titles as opposed to one. If you want to brighten it, there are some options, but I guarantee you won't like them much. You can run the avi through Windows Movie Maker and use its effects to change brightness, contrast,etc. of avi. However, once you output the file, you will see it actually makes video worse. Basically, the quality of your DVD can only be equaly to that of the source (avi).

Another option to brighten but I have found brightening only reveals more flaws: Load the AVI into VDub and go to Video>Filters>Add and you'll see a long list of filters. Double click Brightness/ Contrast and move the Bightness slider a few notches to the right. Click OK, and OK again then select the 'Play' button in the bottom left hand corner (the one with a little zero on it- 3rd button along)- this will give a preview (in the right hand window) of what your video will look like after it's been processed. If it's too bright or still too dark go back into Filters and adjust and preview again. When you're happy with the result choose your video compression (Video>Compression) and select 'Direct Stream Copy' for your audio and File>Save as AVI to save your video.

IHoe, I know it plays one after the other. It just separates them into two separate titles. Title 1 being first half, Title 2 being second half. Also, you'll notice a slight stutter/pause when the switch occurs. So as opposed to having say chapters 1 through 30, you would have chapters 1-15 for title 1, and another chapters 1-15 for title 2. That's all I was saying.